The memorabilia market runs on trust – and that is exactly what makes it vulnerable to forgery. Whether you're buying yourself or wondering whether an inherited or gifted piece is genuine: these are the points you should know before relying on a signed jersey or photo.
Why authenticity is so hard to judge
A signature can hardly be verified reliably with the naked eye – even experienced collectors struggle. Handwriting varies with daily form, surface and the age of the person signing. That's why an entire certification market has developed to distinguish genuine signatures from forged ones.
The most important certification companies
The best known are Beckett Authentication (BAS), James Spence Authentication (JSA), PSA/DNA and Fanatics Authentic. These companies check signatures against reference databases, experience with a player's individual handwriting, and sometimes by observing the signing itself (so-called “witnessed signings”). A certificate from these companies is currently the most reliable indication of authenticity in sports memorabilia.
What a certificate of authenticity is worth – and what it isn't
A certificate of authenticity (COA) is only worth as much as the issuer behind it. Certificates from established companies like those above carry real weight in the market and noticeably influence resale value. Certificates from unknown or self-founded “auction houses”, on the other hand, are often worthless – they confirm nothing more than the seller's own claim.
Typical warning signs when buying
Be careful with strikingly low prices for sought-after players, sellers without a traceable history, certificates without a verifiable certificate number, and photos of the signature that are heavily compressed or taken from unusual angles. Missing holograms or tags from the well-known certifiers on a piece advertised as “certified” are also a clear warning sign.
Provenance and traceability
Beyond the certificate itself, provenance counts: was the signature made at an “in-person” event (that is, under supervision, often with witnesses or video) or sent in by mail? In-person signatures with witness confirmation are considered particularly reliable. A seamless record of purchase – from the original signing to the current seller – additionally increases confidence and often resale value.
What to do if you're unsure
For an existing but uncertified piece, a subsequent assessment by one of the providers mentioned is worthwhile – it costs time and a fee, but creates clarity and can considerably increase value. When buying new, the rule is: better a slightly more expensive, certified piece than a cheap bargain with untraceable provenance. When in doubt, get a second opinion before investing a larger sum.
Unsure whether your piece should be framed or verified first? Write to us – we're happy to share our assessment from everyday collecting.